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A146778 as a simple table

na(n)
11
21
31
41
51
65
717
843
9145
10633
114131
1231831
13267243
142665825
1533726547
16521722083
179834245987
18228276099483
196476476460303
20221310304612835
219127636122908961

[1,1,1,1,1,5,17,43,145,633,4131,31831,267243,
 2665825,33726547,521722083,9834245987,
 228276099483,6476476460303,221310304612835,
 9127636122908961]